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The Model 428-PROG Programmable Current Amplifier converts fast, small currents to a voltage, which can be easily digitized or displayed by an oscilloscope, waveform analyzer, or data acquisition system. It uses a sophisticated "feedback current" circuit to achieve both fast rise times and sub-picoamp noise. The gain of the Model 428-PROG is adjustable in decade increments from 103V/A to 1011V/A, with selectable rise times from 2μs to 300ms.
The maximum current is really dependent on the gain setting range. The 428 is not a measuring instrument, but rather an amplifier. Since the maximum voltage is 10V, then the maximum current that can be applied is 10mA (10^3 gain setting).
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2μs rise time
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1.2fA rms noise
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Up to 1011 V/A gain
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GPIB interface
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